const http = require("http");
const server = http.createServer();
server.on("request", (req, res) => {
  const url = req.url;
  let content = "<h1>404 Not found!</h1>";
  if (url === "/" || url === "/index.html") {
    content = "<h1>首页</h1>";
  } else if (url === "/about.html") {
    content = "<h1>关于</h1>";
  }
  res.setHeader("Content-Type", "text/html; charset=utf-8");
  res.end(content);
});
server.listen(80, () => {
  console.log("server running at http://127.0.0.1");
});
